package com.hmdp.service.impl;

import cn.hutool.core.util.StrUtil;
import cn.hutool.json.JSONUtil;
import com.hmdp.dto.Result;
import com.hmdp.entity.ShopType;
import com.hmdp.mapper.ShopTypeMapper;
import com.hmdp.service.IShopTypeService;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.hmdp.utils.RedisConstants;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.stereotype.Service;

import javax.annotation.Resource;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import java.util.concurrent.TimeUnit;

/**
 * <p>
 * 服务实现类
 * </p>
 *
 * @author 虎哥
 * @since 2021-12-22
 */
@Service
public class ShopTypeServiceImpl extends ServiceImpl<ShopTypeMapper, ShopType> implements IShopTypeService {

    @Resource
    private StringRedisTemplate stringRedisTemplate;

    @Override
    public Result queryTypeList() {
        String cacheShopTypeKey = RedisConstants.CACHE_SHOP_TYPE_KEY;
        List<String> cacheShopTypeListStr = stringRedisTemplate.opsForList().range(cacheShopTypeKey, 0, -1);
        if (cacheShopTypeListStr != null && cacheShopTypeListStr.size() > 0) {
            List<ShopType> shopTypeList = new ArrayList<>();
            cacheShopTypeListStr.forEach(str ->{
                shopTypeList.add(JSONUtil.toBean(str,ShopType.class));
            });
            return Result.ok(shopTypeList);
        }
        List<ShopType> shopTypeList = query().orderByAsc("sort").list();
        if (shopTypeList == null || shopTypeList.size() <= 0) {
            return Result.fail("获取店铺类型失败");
        }
        List<String> shopTypeListStr = new ArrayList<>();
        shopTypeList.forEach(shopType ->
                shopTypeListStr.add(JSONUtil.toJsonStr(shopType))
        );
        stringRedisTemplate.opsForList().leftPushAll(cacheShopTypeKey, shopTypeListStr);
        stringRedisTemplate.expire(cacheShopTypeKey,RedisConstants.CACHE_SHOP_TYPE_TTL, TimeUnit.MINUTES);
        return Result.ok(shopTypeList);
    }
}
